Tin Free Steel (Hi-Top)
|Tin (Sn=2.8 g/m²)||LTS||Hi-Top||K-3 HT||WHT||WHT-2|
|Weldability||RC value (mΩ) *1||0.1 to 0.3||0.1 to 0.3||100 to 200||30 to 70||0.1 to 0.3||0.1 to 0.3|
|Rust proofing||Salt spray test *2||Excellent||Good||Poor||Bad||Poor||Poor|
|Cup process adhesion test *3||Poor||Good||Excellent||Excellent||Excellent||Excellent|
|T peel test *4||Poor||Good||Excellent||Excellent||Excellent||Excellent|
- RC value: Test materials heat processed for 20 minutes at 205°C then contact electrical resistance is measured using our company's RC measuring instruments (RC value: Small → Weldability: Good)
- Salt spray test: 35 degree cendigrade, 5% salt solution sprayed for 2 hours → visual inspection
- Cup process adhesion test: Lacquer coating → cup process→ cup wall surface coated film strength peeled with tape → visual inspection
- T peel test: Lacquer coating → Cut to 5 mm width → 2 test material sheets thermally compressed via nylon film → Measure peeling stress
WeldabilityThe following diagram shows an example of the weldable current range using manufactured can seam welder.
Good welding materials possess a wide weldable current range.